ML20282A517
| ML20282A517 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 07/29/2020 |
| From: | Greg Werner Operations Branch IV |
| To: | South Texas |
| References | |
| NOC-AE-20003753, STI: 35046582 | |
| Download: ML20282A517 (35) | |
Text
Attachment 3 - Withhold from Public Disclosure Under 1 0 CFR 2.390 South Texas Project Electric Generating Station P.O. Box 289 Wadsworth, Texas 7748]
Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 1600 E. Lamar Boulevard Arlington, TX 76011-4511 South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 Post Examination Material August 13, 2020 NOC-AE-20003753 10 CFR 55 10 CFR 2.390(a)(8)
D43.02 This letter provides Post Examination Materials for the NRC License Examination that was administered on July 13, 2020, through July 29, 2020, at South Texas Project (STP), in accordance with NU REG 1021, Operator Licensing Examination Standards for Power Reactors.
STP Nuclear Operating Company requests the NRC consider Attachment 3 to this letter as Exempt from Public Disclosure. None of the exam materials are to go to the Public Document Room (ADAMS) for at least two years.
There are no commitments in this letter.
The following Post Examination material are being sent:
- 1. Form ES-403-1, Written Examination Grading Quality Checklist (Signed Paper Copy)
- 2. Written examination cover sheet with the original graded answer sheet and 2 clean copies of the answer sheet for each examine. (Paper Copy)
- 3. CD-ROM-1, that includes the following electronic files:
- LOT 24 NRC JPMs
- LOT 24 NRC Simulator Scenarios
- LOT 24 NRC Written Exam
- LOT 24 NRC Written Exam Analysis
- LOT 24 NRC Written Exam Applicant Comments After Exam
- LOT 24 NRC Written Exam Question Challenges by STP
- LOT 24 NRC Written Exam Questions and Clarifications During Exam
- LOT 24 NRC Written Exam Seating Arrangement The completed ES-201-3, Examination Security Agreement, will be forwarded to you as soon as possible.
STI: 35046582 - Withhold from Public Disclosure Under 10 CFR 2.390
- Withhold from Public Disclosure Under 1 0 CFR 2.390 NOC-AE-20003753 Page 2 of 3 If you have any questions, please contact Stan Mason at (361) 972-4356 or me at (361) 972-7327.
Bobby Simpson, Jr.
Manager, Operations Training Attachments:
- 1. ES-403-1, Written Examination Grading Quality Checklist
- 2. Written examination cover sheet with the original graded answer sheet and 2 clean copies of the answer sheet for each examine. (Paper Copy)
- 3. CD-ROM with Post-Exam Information - Withhold from Public Disclosure Under 10 CFR 2.390
- Withhold from Public Disclosure Under 1 0 CFR 2.390 cc:
Kelly Clayton Chief Examiner U. S. Nuclear Regulatory Commission 1600 E. Lamar Blvd.
Arlington, TX 76011-4511 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555-0001 STP Records Management without Attachments 2 or 3 - Withhold from Public Disclosure Under 1 0 CFR 2.390 NOC-AE-20003753 Page 3 of 3
LOT 24 NRC EXAM ANALYSIS - 07/29/2020 Bank #
RO#
SRO#
ANSWER A
B C
D Total Missed 2883 1
B 1
1 2919 2
D 0
790 3
D 0
2881 4
D 2
2891 5
A 0
2921 6
A 1
2920 7
D 1
1 3
2918 8
C 0
2917 9
D 0
2914 10 B
0 2913 11 D
0 2911 12 B
9 9 (56%)
2910 13 A
4 1
4 2909 14 A
2 2
2908 15 C
1 2907 16 D
0 2905 17 0
2903 18 A
2 2878 19 D
1 2900 20 B
8 (50%)
2899 21 B
1 2
2898 22 D
5 5
2887 23 B
1 4
2876 24 C
1 1
2643 25 C
2 2
2624 26 B
0 2397 27 C
0 2944 28 A
1689 29 A
2 2
3 1656 30 B
3 1581 31 C
1 4
1474 32 C
0 1467 33 A
7 1
1010 34 C
0 833 35 D
1 65 36 C
1 2886 37 A
5 2890 38 B
0 2889 39 B
0 2888 40 A
6 2885 41 C
0 2949 42 D
0 1
1 2
1 5
3 1
2 1
2 4
1 1
1 5
2 3
1 1
1 1
2 1
1 9
11 (69%)
Page 1 of 5 Removed
LOT 23 NRC EXAM ANALYSIS - 07/29/2019 Bank #
RO#
SRO#
ANSWER A
B C
D Total Missed 2946 43 C
2 1
2731 44 B
1 2
2152 45 D
0 1657 46 A
10 (63%)
1577 47 B
2 2
2107 48 B
0 2310 49 A
1 1
2601 50 B
4 2871 51 D
1 3
2874 52 A
2 0
2875 53 C
2 2879 54 A
0 2880 55 A
0 2882 56 B
2 2892 57 C
0 2897 58 C
2 0
2906 59 B
1 2915 60 D
3 2916 61 D
1 4
2893 62 D
0 2870 63 4
4 2912 64 A
1 3
4 2884 65 D
0 2415 66 A
0 1695 67 B
0 1101 68 C
0 2902 69 C
8 (50%)
2945 70 C
1 1
96 71 D
1 2465 72 C
1 1
1557 73 A
1 1
6 2872 74 A
3 8 (50%)
2894 75 D
3 2942 76 C
3 2922 77 A
5 2925 78 B
0 2668 79 A
0 2929 80 A
5 6 (55%)
2927 81 D
7 (64%)
2926 82 D
3 1
5 2923 83 D
1 2431 84 A
1 2933 85 D
3 2519 86 A
1 1
A 3
4 4
3 2
1 1
1 2
1 1
3 5
2 2
2 2
3 2
1 3
3 1
5 3
1 5
3 1
5 Accept A and B Accept A and B Page 2 of 5
LOT 24 NRC EXAM ANALYSIS - 07/29/2020 Bank #
RO#
SRO#
ANSWER A
B C
D Total Missed 2940 87 C
2 2
2931 88 B
4 4
2924 89 B
1 3
2947 90 B
7 (64%)
2930 91 B
2 2934 92 A
2 5
2936 93 D
5 2937 94 C
1 1
1421 95 D
0 2938 96 D
1 2928 97 D
4 5
2939 98 B
0 185 99 C
2 2935 100 B
8 (73%)
RO #12 - 9 candidates chose distracter C." Correct answer is "B."
This question is based upon knowledge of valves that receive a Phase A Containment Isolation Signal and which valves receive an SI signal. FV-0011 receives a Phase A Containment Isolation signal and MOV-0059 receives an SI signal. FV-0011 is located on CP-004 and has red-green indication there. MOV-0059 is located on CP-0002 and has red-green indication there. Training in LOT 201.06 for CVCS and LOT 201.12 for CCW cover how these valves operate.
No changes to the exam are warranted.
RO #20 - 3 candidates chose distracter A, 5 candidates chose distracter "D." Correct answer is B.
This question is based upon knowledge of the Master Relay Defeat Switch. The Reactor Trip position does cause a reactor trip and the switch must be pulled out to be taken from the Reactor Trip position to the Defeat/CVI Avail position. Training on the MRDS switch is given in LOT 201.20 for SSPS.
No changes to the exam are warranted.
RO #28 - 9 candidates chose distracter C, 2 candidates chose distracter "D." Correct answer is A.
This question is based upon knowledge of the LIGHT BLUE indication color on the RM-11 computer. LIGHT BLUE indicates a loss of process flow to a radiaton monitor. The correct answer stated a loss of sample flow. A loss of sample flow is indicated by DARK BLUE.
There is no correct answer to this question.
The question WAS removed from the exam.
2 1
1 6
1 4
1 5
2 2 1
6 1
1 1
1 Page 3 of 5
RO #46 - 4 candidates chose distracter B," 2 candidates chose distracter "C," 5 candidates chose distracter "D." Correct answer is "A."
This question is based upon knowledge of loss of the instrument air system to the MAB. The student was required to know that Charging Flow Control Valve FCV-205 fails open upon a loss of instrument air. It also required knowledge of what action must be taken upon a failure of FCV-205. The required procedural action is to place the "Alternate Charging Path with FCV-205 Inoperable" in service. The correct answer to the question states that the "alternate charging path" is to be placed in service. Training given to be able to evaluate this question is covered in LOT 201.06 for CVCS and LOT 505.01 training on Off-Normal Procedures.
No changes to the exam are warranted.
RO #69 - 5 candidates chose distracter "A", 3 candidates chose distracter "D." Correct answer is "C."
This question is based on knowledge of entry conditions for Technical Specifications. The correct answer, RWST Level Channel LT-0931 is removed from service for maintenance, is the only one that is a direct entry into a Technical Specification. General training on TSs is given in LOT 503.01.
No changes to the exam are warranted.
RO #74 - 5 candidates chose distracter B, 1 candidate chose distracter "D." Correct answer is A.
This question is based upon knowledge of the UFSAR requirements of the AFW system. The AFW system is required to provide 500 gpm within 1 minute of initiation and will cool down the RCS at 50 degrees F/hour. Training is given in LOT 202.28 for Auxiliary Feedwater.
No changes to the exam are warranted.
SRO #80 - 5 candidates chose distracter B, 1 candidate chose distracter "D." Correct answer is A.
This question is based upon the knowledge of Emergency Maintenance. The student was required to know that emergency maintenance is performed at the discretion of the Shift Manager. The question further asked if the system could be considered functional or must be declared inoperable. This question failed to note that per 0PGP03-ZA-0090, that the system must be declared inoperable but can be declared functional. The question was written that inoperable and functional were two distinct states which is not the case. (Steps 4.1.1.3, 4.1.1.4).
Two answers (A and B) WERE accepted for this question.
SRO #81 - 5 candidates chose distracter B, 1 candidate chose distracter "D." Correct answer is A.
This question is based upon knowledge of Technical Specifications Section 6.12.2 It required the knowledge of who has control of the key for Locked High Radiation Areas. The key is required to be controlled by Technical Specification Section 6.0, and may be maintained by either the Shift Manager or the RP Manager. General training on TSs is given in LOT 503.01.
No changes to the exam are warranted.
LOT 24 NRC EXAM ANALYSIS - 07/29/2020 Page 4 of 5
LOT 24 NRC EXAM ANALYSIS - 07/29/2020 SRO #90 - 5 candidates chose distracter A, 1 candidate chose distracter "C." Correct answer is B.
This question required the students to know required actions from 0POP04-AE-0005, for a grid disturbance. With both North and South bus voltages reading 335KV, all offsite sources are INOPERABLE. This is a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> action by Technical Specifications to restore at least one of the inoperable offsite circuits on each unit. Per 0POP04-AE-0005, while awaiting voltage restoration, the crew will transfer the 4160V ESF Buses to the UAT. General training on TSs is given in LOT 503.01. LOT 505.01 gives the training on Off-Normal Procedures.
No changes to the exam are warranted.
SRO #100 - 1 candidate chose distracter A, 5 candidates chose distracter "C," 1 candidate chose distracter "D." Correct answer is B."
This question required the students to have knowledge of the pump inservice testing program. If a vibration reading on a safety related pump falls into the ALERT range, this does not require the pump be made inoperable, but does require the frequency of testing to be doubled per 0PGP03-ZE-0022. The pump is not OPERABLE but NONCONFORMING, because this designation is used when a component has improper design, testing, construction, or modification. This procedure is covered during OJT Training for the LOT program and in LOT 802, SRO Administrative Procedures Training.
No changes to the exam are warranted.
Page 5 of 5
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Question 28 On the RM-11, if a LIGHT BLUE color is displayed for radiation monitor status, then the radiation monitor has a(an)
A.
loss of sample flow.
B.
communications failure.
C.
operate failure.
D.
change in polling status.
Answer A: loss of sample flow.
This question asked to identify the condition that would result in a LIGHT BLUE indication for a radiation monitor. The keyed answer was "loss of sample flow." This condition is actually indicated by DARK BLUE. This is indicated in 0POP04-RA-0001, Addendum 24, Page 1 of 27 (shown on the next page). Since DARK BLUE indicates a monitor loss of sample flow and LIGHT BLUE does not correspond to any of the choices on the question, STP recommends that this question be removed from the exam.
After discussion with the Chief Examiner, this question was removed from the exam and then the exam was regraded.
Note: This question and the next 2 questions contained errors that were not caught during the development, validation, and review process. Condition Report 20-8347 will address this issue.
Page 1 of 17
Page 2 of 17 POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Question 73 The unit is at 100% power.
Instrument Air pressure begins lowering rapidly.
The crew enters 0POP04-IA-0001, Loss of Instrument Air.
With NO operator action, on CP-004, the RO will note TOTAL seal injection flow ________(1)_______ because the position of
_______(2)______.
A.
(1) on the ICS screen has risen (2) HCV-0218, Seal Injection Flow Control Valve, is full OPEN B.
(1) displayed on a panel indicator has risen (2) HCV-0218, Seal Injection Flow Control Valve, is full OPEN C.
(1) on the ICS screen has lowered (2) HCV-0218, Seal Injection Flow Control Valve, is full CLOSED D.
(1) displayed on a panel indicator has lowered (2) HCV-0218, Seal Injection Flow Control Valve, is full CLOSED Answer A: (1) on the ICS screen has risen (2) HCV-0218, Seal Injection Flow Control Valve, is full OPEN Challenge for question 73 continued on next page.
Page 3 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Challenge for question 73 continued from previous page.
This question asked the student for the effects on RCP seal injection upon a loss of instrument air. With a loss of instrument air, HCV-0218 fails open, increasing seal injection flow to all 4 RCPs (Failure position is seen in 0POP04-IA-0001, Addendum 5, page 2, on the following pages). The student was also required to state where total seal injection flow could be read. The keyed answer was on the ICS screen which has all 4 individual seal injection flows and also total seal injection flow. On the control panels, each RCP has a digital recorder that displays seal injection flow and seal return flow (Pictures of these recorders are on the following pages). There is also a trend for these parameters right above the digital display. The student can note total seal injection flow on ICS, then also quickly determine that total seal injection flow has risen if all (or even one) recorder trends have changed.
This question placed the student in 0POP04-IA-0001, Loss of Instrument Air. In MODE 1, if a loss of instrument air occurred, several other abnormal operating procedures would be entered because of effects on individual systems such as CVCS and Feedwater. In this case, letdown and charging flow would be affected as would seal injection flow (Failure positions are seen in 0POP04-IA-0001, Addendum 5, page 2, shown below). The crew would respond with procedures to correct these issues. As part of the response for the effect on the CVCS system, the crew would need to know how to determine total charging pump flow which includes charging flow to the loops and seal injection flow. Total charging flow must be maintained less than a maximum of 300 gpm. (see 0POP09-AN-04M8, page 73. Total charging flow is operationally maintained at no more than 240 gpm, 200 gpm maximum charging flow and 40 gpm seal injection flow).
Page 4 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Total charging pump flow would then be controlled manually to reestablish proper conditions. (See 0POP04-RP-0002, page 4, Addendum 2, Page 1, shown below) Total seal injection flow is also needed to ensure proper RCP seal package operation. Numerous procedures require the crew to maintain seal injection flow between 6 and 13 gpm per RCP. (See 0POP04-RP-0002, Page 3). Total seal injection flow is operationally relevant for several reasons, and the reactor operator must know different methods to obtain this value. Both the ICS and the individual digital recorders are important to the reactor operator's job and must be known. STP recommend accepting answers A and B on this question.
After discussion with the Chief Examiner, it was decided to accept answer A and B. The exam was then regraded.
Page 5 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 6 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 7 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 8 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 9 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 10 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 11 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Question 80 Per 0PGP03-ZA-0090, Work Process Program, complete the following:
Emergency Maintenance activities are performed at the discretion of the
______(1)______.
When Emergency Maintenance is performed on a safety related system, the Shift Manager _______(2)_______.
A.
(1) Shift Manager (2) is allowed to consider the system functional based on the knowledge of actions taken B.
(1) Shift Manager (2) must declare the system inoperable C.
(1) Plant Manager (2) is allowed to consider the system functional based on the knowledge of actions taken D.
(1) Plant Manager (2) must declare the system inoperable Answer A: (1) Shift Manager (2) is allowed to consider the system functional based on the knowledge of actions taken Challenge for question 80 continued on next page.
Page 12 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Challenge for question 80 continued from previous page.
This question is based upon the knowledge of Emergency Maintenance.
The student was required to know that Emergency Maintenance is performed at the discretion of the Shift Manager. The second half of the question required the student to pick between whether the system must be declared inoperable or can be called functional. This distinction is not accurate as during Emergency Maintenance the system will be declared inoperable and can be declared functional at the discretion of the Shift Manager. This is detailed in 0PGP03-ZA-0090, pages 4 and 16 (shown on the following pages). Additionally, "functional" is distinct from "operable" as described in 0PGP03-ZA-0091, pages 9 and 10 (shown on the following pages. STP recommend accepting answers A and B on this question.
After discussion with the Chief Examiner, it was decided to accept answer A and B. The exam was then regraded.
Page 13 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 14 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 15 of 17
POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020 Page 16 of 17
Page 17 of 17 POST-EXAM QUESTION CHALLENGES BY STP STP LOT 24 NRC WRITTEN EXAM 07/29/2020